Results 11 to 20 of about 4,033,948 (250)

Simulation and Experiment of Windage Power Loss of A Shrouded Spiral Bevel Gears under Oil Injection Lubrication

Chinese Journal of Mechanical Engineering
During high-speed rotation, the surface of aeronautic spiral bevel gears will generate significant pressure and viscous forces, which will cause a certain amount of windage power loss and reduce the efficiency of the transmission system.
Bo Li, Kai Rong, Xuyang Zhang, Sanmin Wang, U-Xuan Tan, Xuanyuan Su, Laifa Tao   +6 more
doaj   +2 more sources

Optimal rotor structures to reduce Windage Loss and their impact on Acoustic Noise and Vibration in Switched Reluctance Motors: Application to L5M and L5N electric-three wheelers

Ain Shams Engineering Journal
Two Switched Reluctance Motors (SRMs) rated to 3 kW and 6 kW have been designed for L5M and L5N (High-speed passenger and cargo) electric three-wheeler traction application.
Arjun Seshadri, Rahul Roy, Lenin Natesan Chokkalingam   +2 more
doaj   +2 more sources

Simulation for Reduction of Windage Loss of Spiral Bevel Gear

Jixie chuandong, 2017
Since windage power loss from spiral bevel gear in aero application has adverse influence on aero engine fuel efficiency,it is beneficial to conduct investigation on minimizing the loss. The simulation analysis of the windage loss of spiral bevel gear is
梁作斌, 张茂强, 樊拓
doaj   +1 more source

Smart Solutions: A New Direct Current Electric Machine Design to Reduce Weight and Enhance Efficiency. [PDF]

Glob Chall
This article introduces a smart solution for the design of a brush DC motor with a winding‐free rotor (DCFR). The proposed model simplifies manufacturing, reduces material costs, and enhances efficiency. Designed for variable speed and solar power applications, the DCFR achieves 91.8% efficiency and a 21% weight reduction compared to conventional ...
Ivliev D, Bashynska I, Kosenkov V, Boiko A, Niekrasova L, Chepovskyi I.   +5 more
europepmc   +2 more sources

21st-Century Mangrove Expansion Along the Southeastern United States. [PDF]

Glob Chang Biol
Global warming is driving poleward range shifts worldwide, including the northward expansion of tropical mangroves along the Atlantic coast of North America. In this region, warming winters are enabling mangroves to encroach into salt marsh–dominated temperate latitudes, potentially transforming wetland ecosystem function and services. To assess future
Enes Gramoso LIA, Carroll D, Cavanaugh KC, Bardou R, Osland MJ, Van der Stocken T.   +5 more
europepmc   +2 more sources

Going with the flow: Leveraging reef-scale hydrodynamics for upscaling larval-based restoration. [PDF]

Ecol Appl
Abstract Anthropogenic pressures are impacting coastal marine ecosystems, necessitating large‐scale interventions to accelerate recovery. Propagule‐based restoration holds the potential for restoring shallow coastal systems at hectare scales by harnessing natural dispersal.
Gouezo M, Langlais C, Beardsley J, Roff G, Harrison PL, Thomson DP, Doropoulos C.   +6 more
europepmc   +2 more sources

Analysis of axial windage loss in air gap of high-speed motors under high Taylor number

Journal of Physics: Conference Series, 2023
In the field of ultra-high-speed motors, windage loss rises rapidly with the increase of rotational speed, and even becomes the main part of motor loss. However, most researches of windage loss are based on empirical formulas, which has a narrow scope of
Yuchen Song, Jiwei Cao, Chengbao Zhong, Jialiang Chen, Liyi Li   +4 more
semanticscholar   +1 more source

Simulating drifting fish aggregating device trajectories to identify potential interactions with endangered sea turtles. [PDF]

Conserv Biol
Abstract Purse‐seine fishers using drifting fish aggregating devices (dFADs), mainly built with bamboo, plastic buoys, and plastic netting, to aggregate and catch tropical tuna, deploy 46,000–65,000 dFADs per year in the Pacific Ocean. Some of the major concerns associated with this widespread fishing device are potential entanglement of sea turtles ...
Escalle L, Scutt Phillips J, Lopez J, Lynch JM, Murua H, Royer SJ, Swimmer Y, Murua J, Sen Gupta A, Restrepo V, Moreno G.   +10 more
europepmc   +2 more sources

Modelling windage power loss from an enclosed spur gear [PDF]

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2007
Within a gearbox the majority of transmission losses can be attributed to bearing losses, meshing losses, or losses due to windage/churning. In this paper the commercial computational fluid dynamics (CFD) code Fluent 6.2.16 is applied in a two-dimensional study of windage power loss (WPL) from a single spur gear rotating in air.
Eastwick, Carol, Simmons, K., Al-Shibl, K.   +2 more
openaire   +3 more sources

Windage Losses of Rotating Cylinder

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1968
An empirical relationship for the windage losses of a rotating inner cylinder in a concentric stationary outer cylinder was obtained as a function of the rotaing speed of the inner cylinder and the gap width between both cylinders, through analysis of theories by Taylor, Davey and Batchelor, and experiments by Wendt, Taylor and Donnelly.
Akira KANAGAWA, Yoichi TAKASHIMA, Hiroshi TAKADA   +2 more
openaire   +2 more sources